/* * Copyright (C) 2012 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "interpreter_common.h" #include #include "debugger.h" #include "mirror/array-inl.h" #include "unstarted_runtime.h" #include "verifier/method_verifier.h" namespace art { namespace interpreter { void ThrowNullPointerExceptionFromInterpreter() { ThrowNullPointerExceptionFromDexPC(); } template bool DoFieldGet(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) { const bool is_static = (find_type == StaticObjectRead) || (find_type == StaticPrimitiveRead); const uint32_t field_idx = is_static ? inst->VRegB_21c() : inst->VRegC_22c(); ArtField* f = FindFieldFromCode(field_idx, shadow_frame.GetMethod(), self, Primitive::ComponentSize(field_type)); if (UNLIKELY(f == nullptr)) { CHECK(self->IsExceptionPending()); return false; } Object* obj; if (is_static) { obj = f->GetDeclaringClass(); } else { obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); if (UNLIKELY(obj == nullptr)) { ThrowNullPointerExceptionForFieldAccess(f, true); return false; } } f->GetDeclaringClass()->AssertInitializedOrInitializingInThread(self); // Report this field access to instrumentation if needed. instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); if (UNLIKELY(instrumentation->HasFieldReadListeners())) { Object* this_object = f->IsStatic() ? nullptr : obj; instrumentation->FieldReadEvent(self, this_object, shadow_frame.GetMethod(), shadow_frame.GetDexPC(), f); } uint32_t vregA = is_static ? inst->VRegA_21c(inst_data) : inst->VRegA_22c(inst_data); switch (field_type) { case Primitive::kPrimBoolean: shadow_frame.SetVReg(vregA, f->GetBoolean(obj)); break; case Primitive::kPrimByte: shadow_frame.SetVReg(vregA, f->GetByte(obj)); break; case Primitive::kPrimChar: shadow_frame.SetVReg(vregA, f->GetChar(obj)); break; case Primitive::kPrimShort: shadow_frame.SetVReg(vregA, f->GetShort(obj)); break; case Primitive::kPrimInt: shadow_frame.SetVReg(vregA, f->GetInt(obj)); break; case Primitive::kPrimLong: shadow_frame.SetVRegLong(vregA, f->GetLong(obj)); break; case Primitive::kPrimNot: shadow_frame.SetVRegReference(vregA, f->GetObject(obj)); break; default: LOG(FATAL) << "Unreachable: " << field_type; UNREACHABLE(); } return true; } // Explicitly instantiate all DoFieldGet functions. #define EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, _do_check) \ template bool DoFieldGet<_find_type, _field_type, _do_check>(Thread* self, \ ShadowFrame& shadow_frame, \ const Instruction* inst, \ uint16_t inst_data) #define EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(_find_type, _field_type) \ EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, false); \ EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL(_find_type, _field_type, true); // iget-XXX EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimBoolean) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimByte) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimChar) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimShort) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimInt) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstancePrimitiveRead, Primitive::kPrimLong) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(InstanceObjectRead, Primitive::kPrimNot) // sget-XXX EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimBoolean) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimByte) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimChar) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimShort) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimInt) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticPrimitiveRead, Primitive::kPrimLong) EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL(StaticObjectRead, Primitive::kPrimNot) #undef EXPLICIT_DO_FIELD_GET_ALL_TEMPLATE_DECL #undef EXPLICIT_DO_FIELD_GET_TEMPLATE_DECL // Handles iget-quick, iget-wide-quick and iget-object-quick instructions. // Returns true on success, otherwise throws an exception and returns false. template bool DoIGetQuick(ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) { Object* obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); if (UNLIKELY(obj == nullptr)) { // We lost the reference to the field index so we cannot get a more // precised exception message. ThrowNullPointerExceptionFromDexPC(); return false; } MemberOffset field_offset(inst->VRegC_22c()); // Report this field access to instrumentation if needed. Since we only have the offset of // the field from the base of the object, we need to look for it first. instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); if (UNLIKELY(instrumentation->HasFieldReadListeners())) { ArtField* f = ArtField::FindInstanceFieldWithOffset(obj->GetClass(), field_offset.Uint32Value()); DCHECK(f != nullptr); DCHECK(!f->IsStatic()); instrumentation->FieldReadEvent(Thread::Current(), obj, shadow_frame.GetMethod(), shadow_frame.GetDexPC(), f); } // Note: iget-x-quick instructions are only for non-volatile fields. const uint32_t vregA = inst->VRegA_22c(inst_data); switch (field_type) { case Primitive::kPrimInt: shadow_frame.SetVReg(vregA, static_cast(obj->GetField32(field_offset))); break; case Primitive::kPrimBoolean: shadow_frame.SetVReg(vregA, static_cast(obj->GetFieldBoolean(field_offset))); break; case Primitive::kPrimByte: shadow_frame.SetVReg(vregA, static_cast(obj->GetFieldByte(field_offset))); break; case Primitive::kPrimChar: shadow_frame.SetVReg(vregA, static_cast(obj->GetFieldChar(field_offset))); break; case Primitive::kPrimShort: shadow_frame.SetVReg(vregA, static_cast(obj->GetFieldShort(field_offset))); break; case Primitive::kPrimLong: shadow_frame.SetVRegLong(vregA, static_cast(obj->GetField64(field_offset))); break; case Primitive::kPrimNot: shadow_frame.SetVRegReference(vregA, obj->GetFieldObject(field_offset)); break; default: LOG(FATAL) << "Unreachable: " << field_type; UNREACHABLE(); } return true; } // Explicitly instantiate all DoIGetQuick functions. #define EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(_field_type) \ template bool DoIGetQuick<_field_type>(ShadowFrame& shadow_frame, const Instruction* inst, \ uint16_t inst_data) EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimInt); // iget-quick. EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimBoolean); // iget-boolean-quick. EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimByte); // iget-byte-quick. EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimChar); // iget-char-quick. EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimShort); // iget-short-quick. EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimLong); // iget-wide-quick. EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL(Primitive::kPrimNot); // iget-object-quick. #undef EXPLICIT_DO_IGET_QUICK_TEMPLATE_DECL template static JValue GetFieldValue(const ShadowFrame& shadow_frame, uint32_t vreg) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { JValue field_value; switch (field_type) { case Primitive::kPrimBoolean: field_value.SetZ(static_cast(shadow_frame.GetVReg(vreg))); break; case Primitive::kPrimByte: field_value.SetB(static_cast(shadow_frame.GetVReg(vreg))); break; case Primitive::kPrimChar: field_value.SetC(static_cast(shadow_frame.GetVReg(vreg))); break; case Primitive::kPrimShort: field_value.SetS(static_cast(shadow_frame.GetVReg(vreg))); break; case Primitive::kPrimInt: field_value.SetI(shadow_frame.GetVReg(vreg)); break; case Primitive::kPrimLong: field_value.SetJ(shadow_frame.GetVRegLong(vreg)); break; case Primitive::kPrimNot: field_value.SetL(shadow_frame.GetVRegReference(vreg)); break; default: LOG(FATAL) << "Unreachable: " << field_type; UNREACHABLE(); } return field_value; } template bool DoFieldPut(Thread* self, const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) { bool do_assignability_check = do_access_check; bool is_static = (find_type == StaticObjectWrite) || (find_type == StaticPrimitiveWrite); uint32_t field_idx = is_static ? inst->VRegB_21c() : inst->VRegC_22c(); ArtField* f = FindFieldFromCode(field_idx, shadow_frame.GetMethod(), self, Primitive::ComponentSize(field_type)); if (UNLIKELY(f == nullptr)) { CHECK(self->IsExceptionPending()); return false; } Object* obj; if (is_static) { obj = f->GetDeclaringClass(); } else { obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); if (UNLIKELY(obj == nullptr)) { ThrowNullPointerExceptionForFieldAccess(f, false); return false; } } f->GetDeclaringClass()->AssertInitializedOrInitializingInThread(self); uint32_t vregA = is_static ? inst->VRegA_21c(inst_data) : inst->VRegA_22c(inst_data); // Report this field access to instrumentation if needed. Since we only have the offset of // the field from the base of the object, we need to look for it first. instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); if (UNLIKELY(instrumentation->HasFieldWriteListeners())) { JValue field_value = GetFieldValue(shadow_frame, vregA); Object* this_object = f->IsStatic() ? nullptr : obj; instrumentation->FieldWriteEvent(self, this_object, shadow_frame.GetMethod(), shadow_frame.GetDexPC(), f, field_value); } switch (field_type) { case Primitive::kPrimBoolean: f->SetBoolean(obj, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimByte: f->SetByte(obj, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimChar: f->SetChar(obj, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimShort: f->SetShort(obj, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimInt: f->SetInt(obj, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimLong: f->SetLong(obj, shadow_frame.GetVRegLong(vregA)); break; case Primitive::kPrimNot: { Object* reg = shadow_frame.GetVRegReference(vregA); if (do_assignability_check && reg != nullptr) { // FieldHelper::GetType can resolve classes, use a handle wrapper which will restore the // object in the destructor. Class* field_class; { StackHandleScope<2> hs(self); HandleWrapper h_reg(hs.NewHandleWrapper(®)); HandleWrapper h_obj(hs.NewHandleWrapper(&obj)); field_class = f->GetType(); } if (!reg->VerifierInstanceOf(field_class)) { // This should never happen. std::string temp1, temp2, temp3; self->ThrowNewExceptionF("Ljava/lang/VirtualMachineError;", "Put '%s' that is not instance of field '%s' in '%s'", reg->GetClass()->GetDescriptor(&temp1), field_class->GetDescriptor(&temp2), f->GetDeclaringClass()->GetDescriptor(&temp3)); return false; } } f->SetObj(obj, reg); break; } default: LOG(FATAL) << "Unreachable: " << field_type; UNREACHABLE(); } return true; } // Explicitly instantiate all DoFieldPut functions. #define EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, _do_check, _transaction_active) \ template bool DoFieldPut<_find_type, _field_type, _do_check, _transaction_active>(Thread* self, \ const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) #define EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(_find_type, _field_type) \ EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, false, false); \ EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, true, false); \ EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, false, true); \ EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL(_find_type, _field_type, true, true); // iput-XXX EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimBoolean) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimByte) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimChar) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimShort) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimInt) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstancePrimitiveWrite, Primitive::kPrimLong) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(InstanceObjectWrite, Primitive::kPrimNot) // sput-XXX EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimBoolean) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimByte) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimChar) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimShort) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimInt) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticPrimitiveWrite, Primitive::kPrimLong) EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL(StaticObjectWrite, Primitive::kPrimNot) #undef EXPLICIT_DO_FIELD_PUT_ALL_TEMPLATE_DECL #undef EXPLICIT_DO_FIELD_PUT_TEMPLATE_DECL template bool DoIPutQuick(const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data) { Object* obj = shadow_frame.GetVRegReference(inst->VRegB_22c(inst_data)); if (UNLIKELY(obj == nullptr)) { // We lost the reference to the field index so we cannot get a more // precised exception message. ThrowNullPointerExceptionFromDexPC(); return false; } MemberOffset field_offset(inst->VRegC_22c()); const uint32_t vregA = inst->VRegA_22c(inst_data); // Report this field modification to instrumentation if needed. Since we only have the offset of // the field from the base of the object, we need to look for it first. instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); if (UNLIKELY(instrumentation->HasFieldWriteListeners())) { ArtField* f = ArtField::FindInstanceFieldWithOffset(obj->GetClass(), field_offset.Uint32Value()); DCHECK(f != nullptr); DCHECK(!f->IsStatic()); JValue field_value = GetFieldValue(shadow_frame, vregA); instrumentation->FieldWriteEvent(Thread::Current(), obj, shadow_frame.GetMethod(), shadow_frame.GetDexPC(), f, field_value); } // Note: iput-x-quick instructions are only for non-volatile fields. switch (field_type) { case Primitive::kPrimBoolean: obj->SetFieldBoolean(field_offset, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimByte: obj->SetFieldByte(field_offset, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimChar: obj->SetFieldChar(field_offset, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimShort: obj->SetFieldShort(field_offset, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimInt: obj->SetField32(field_offset, shadow_frame.GetVReg(vregA)); break; case Primitive::kPrimLong: obj->SetField64(field_offset, shadow_frame.GetVRegLong(vregA)); break; case Primitive::kPrimNot: obj->SetFieldObject(field_offset, shadow_frame.GetVRegReference(vregA)); break; default: LOG(FATAL) << "Unreachable: " << field_type; UNREACHABLE(); } return true; } // Explicitly instantiate all DoIPutQuick functions. #define EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, _transaction_active) \ template bool DoIPutQuick<_field_type, _transaction_active>(const ShadowFrame& shadow_frame, \ const Instruction* inst, \ uint16_t inst_data) #define EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(_field_type) \ EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, false); \ EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL(_field_type, true); EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimInt) // iput-quick. EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimBoolean) // iput-boolean-quick. EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimByte) // iput-byte-quick. EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimChar) // iput-char-quick. EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimShort) // iput-short-quick. EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimLong) // iput-wide-quick. EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL(Primitive::kPrimNot) // iput-object-quick. #undef EXPLICIT_DO_IPUT_QUICK_ALL_TEMPLATE_DECL #undef EXPLICIT_DO_IPUT_QUICK_TEMPLATE_DECL uint32_t FindNextInstructionFollowingException( Thread* self, ShadowFrame& shadow_frame, uint32_t dex_pc, const instrumentation::Instrumentation* instrumentation) { self->VerifyStack(); StackHandleScope<2> hs(self); Handle exception(hs.NewHandle(self->GetException())); if (instrumentation->HasExceptionCaughtListeners() && self->IsExceptionThrownByCurrentMethod(exception.Get())) { instrumentation->ExceptionCaughtEvent(self, exception.Get()); } bool clear_exception = false; uint32_t found_dex_pc = shadow_frame.GetMethod()->FindCatchBlock( hs.NewHandle(exception->GetClass()), dex_pc, &clear_exception); if (found_dex_pc == DexFile::kDexNoIndex) { // Exception is not caught by the current method. We will unwind to the // caller. Notify any instrumentation listener. instrumentation->MethodUnwindEvent(self, shadow_frame.GetThisObject(), shadow_frame.GetMethod(), dex_pc); } else { // Exception is caught in the current method. We will jump to the found_dex_pc. if (clear_exception) { self->ClearException(); } } return found_dex_pc; } void UnexpectedOpcode(const Instruction* inst, const ShadowFrame& shadow_frame) { LOG(FATAL) << "Unexpected instruction: " << inst->DumpString(shadow_frame.GetMethod()->GetDexFile()); UNREACHABLE(); } // Assign register 'src_reg' from shadow_frame to register 'dest_reg' into new_shadow_frame. static inline void AssignRegister(ShadowFrame* new_shadow_frame, const ShadowFrame& shadow_frame, size_t dest_reg, size_t src_reg) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { // If both register locations contains the same value, the register probably holds a reference. // Uint required, so that sign extension does not make this wrong on 64b systems uint32_t src_value = shadow_frame.GetVReg(src_reg); mirror::Object* o = shadow_frame.GetVRegReference(src_reg); if (src_value == reinterpret_cast(o)) { new_shadow_frame->SetVRegReference(dest_reg, o); } else { new_shadow_frame->SetVReg(dest_reg, src_value); } } void AbortTransactionF(Thread* self, const char* fmt, ...) { va_list args; va_start(args, fmt); AbortTransactionV(self, fmt, args); va_end(args); } void AbortTransactionV(Thread* self, const char* fmt, va_list args) { CHECK(Runtime::Current()->IsActiveTransaction()); // Constructs abort message. std::string abort_msg; StringAppendV(&abort_msg, fmt, args); // Throws an exception so we can abort the transaction and rollback every change. Runtime::Current()->AbortTransactionAndThrowAbortError(self, abort_msg); } template bool DoCall(ArtMethod* called_method, Thread* self, ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data, JValue* result) { bool string_init = false; // Replace calls to String. with equivalent StringFactory call. if (called_method->GetDeclaringClass()->IsStringClass() && called_method->IsConstructor()) { ScopedObjectAccessUnchecked soa(self); jmethodID mid = soa.EncodeMethod(called_method); called_method = soa.DecodeMethod(WellKnownClasses::StringInitToStringFactoryMethodID(mid)); string_init = true; } // Compute method information. const DexFile::CodeItem* code_item = called_method->GetCodeItem(); const uint16_t num_ins = (is_range) ? inst->VRegA_3rc(inst_data) : inst->VRegA_35c(inst_data); uint16_t num_regs; if (LIKELY(code_item != nullptr)) { num_regs = code_item->registers_size_; DCHECK_EQ(string_init ? num_ins - 1 : num_ins, code_item->ins_size_); } else { DCHECK(called_method->IsNative() || called_method->IsProxyMethod()); num_regs = num_ins; if (string_init) { // The new StringFactory call is static and has one fewer argument. num_regs--; } } // Allocate shadow frame on the stack. const char* old_cause = self->StartAssertNoThreadSuspension("DoCall"); void* memory = alloca(ShadowFrame::ComputeSize(num_regs)); ShadowFrame* new_shadow_frame(ShadowFrame::Create(num_regs, &shadow_frame, called_method, 0, memory)); // Initialize new shadow frame. size_t first_dest_reg = num_regs - num_ins; if (do_assignability_check) { // Slow path. // We might need to do class loading, which incurs a thread state change to kNative. So // register the shadow frame as under construction and allow suspension again. ScopedStackedShadowFramePusher pusher( self, new_shadow_frame, StackedShadowFrameType::kShadowFrameUnderConstruction); self->EndAssertNoThreadSuspension(old_cause); // We need to do runtime check on reference assignment. We need to load the shorty // to get the exact type of each reference argument. const DexFile::TypeList* params = new_shadow_frame->GetMethod()->GetParameterTypeList(); uint32_t shorty_len = 0; const char* shorty = new_shadow_frame->GetMethod()->GetShorty(&shorty_len); // TODO: find a cleaner way to separate non-range and range information without duplicating // code. uint32_t arg[5]; // only used in invoke-XXX. uint32_t vregC; // only used in invoke-XXX-range. if (is_range) { vregC = inst->VRegC_3rc(); } else { inst->GetVarArgs(arg, inst_data); } // Handle receiver apart since it's not part of the shorty. size_t dest_reg = first_dest_reg; size_t arg_offset = 0; if (!new_shadow_frame->GetMethod()->IsStatic()) { size_t receiver_reg = is_range ? vregC : arg[0]; new_shadow_frame->SetVRegReference(dest_reg, shadow_frame.GetVRegReference(receiver_reg)); ++dest_reg; ++arg_offset; } else if (string_init) { // Skip the referrer for the new static StringFactory call. ++dest_reg; ++arg_offset; } for (uint32_t shorty_pos = 0; dest_reg < num_regs; ++shorty_pos, ++dest_reg, ++arg_offset) { DCHECK_LT(shorty_pos + 1, shorty_len); const size_t src_reg = (is_range) ? vregC + arg_offset : arg[arg_offset]; switch (shorty[shorty_pos + 1]) { case 'L': { Object* o = shadow_frame.GetVRegReference(src_reg); if (do_assignability_check && o != nullptr) { Class* arg_type = new_shadow_frame->GetMethod()->GetClassFromTypeIndex( params->GetTypeItem(shorty_pos).type_idx_, true); if (arg_type == nullptr) { CHECK(self->IsExceptionPending()); return false; } if (!o->VerifierInstanceOf(arg_type)) { // This should never happen. std::string temp1, temp2; self->ThrowNewExceptionF("Ljava/lang/VirtualMachineError;", "Invoking %s with bad arg %d, type '%s' not instance of '%s'", new_shadow_frame->GetMethod()->GetName(), shorty_pos, o->GetClass()->GetDescriptor(&temp1), arg_type->GetDescriptor(&temp2)); return false; } } new_shadow_frame->SetVRegReference(dest_reg, o); break; } case 'J': case 'D': { uint64_t wide_value = (static_cast(shadow_frame.GetVReg(src_reg + 1)) << 32) | static_cast(shadow_frame.GetVReg(src_reg)); new_shadow_frame->SetVRegLong(dest_reg, wide_value); ++dest_reg; ++arg_offset; break; } default: new_shadow_frame->SetVReg(dest_reg, shadow_frame.GetVReg(src_reg)); break; } } } else { // Fast path: no extra checks. if (is_range) { uint16_t first_src_reg = inst->VRegC_3rc(); if (string_init) { // Skip the referrer for the new static StringFactory call. ++first_src_reg; ++first_dest_reg; } for (size_t src_reg = first_src_reg, dest_reg = first_dest_reg; dest_reg < num_regs; ++dest_reg, ++src_reg) { AssignRegister(new_shadow_frame, shadow_frame, dest_reg, src_reg); } } else { DCHECK_LE(num_ins, 5U); uint16_t regList = inst->Fetch16(2); uint16_t count = num_ins; size_t arg_index = 0; if (count == 5) { AssignRegister(new_shadow_frame, shadow_frame, first_dest_reg + 4U, (inst_data >> 8) & 0x0f); --count; } if (string_init) { // Skip the referrer for the new static StringFactory call. regList >>= 4; ++first_dest_reg; --count; } for (; arg_index < count; ++arg_index, regList >>= 4) { AssignRegister(new_shadow_frame, shadow_frame, first_dest_reg + arg_index, regList & 0x0f); } } self->EndAssertNoThreadSuspension(old_cause); } // Do the call now. if (LIKELY(Runtime::Current()->IsStarted())) { if (kIsDebugBuild && new_shadow_frame->GetMethod()->GetEntryPointFromInterpreter() == nullptr) { LOG(FATAL) << "Attempt to invoke non-executable method: " << PrettyMethod(new_shadow_frame->GetMethod()); UNREACHABLE(); } if (kIsDebugBuild && Runtime::Current()->GetInstrumentation()->IsForcedInterpretOnly() && !new_shadow_frame->GetMethod()->IsNative() && !new_shadow_frame->GetMethod()->IsProxyMethod() && new_shadow_frame->GetMethod()->GetEntryPointFromInterpreter() == artInterpreterToCompiledCodeBridge) { LOG(FATAL) << "Attempt to call compiled code when -Xint: " << PrettyMethod(new_shadow_frame->GetMethod()); UNREACHABLE(); } // Force the use of interpreter when it is required by the debugger. EntryPointFromInterpreter* entry; if (UNLIKELY(Dbg::IsForcedInterpreterNeededForCalling(self, new_shadow_frame->GetMethod()))) { entry = &art::artInterpreterToInterpreterBridge; } else { entry = new_shadow_frame->GetMethod()->GetEntryPointFromInterpreter(); } entry(self, code_item, new_shadow_frame, result); } else { UnstartedRuntime::Invoke(self, code_item, new_shadow_frame, result, first_dest_reg); } if (string_init && !self->IsExceptionPending()) { // Set the new string result of the StringFactory. uint32_t vregC = (is_range) ? inst->VRegC_3rc() : inst->VRegC_35c(); shadow_frame.SetVRegReference(vregC, result->GetL()); // Overwrite all potential copies of the original result of the new-instance of string with the // new result of the StringFactory. Use the verifier to find this set of registers. ArtMethod* method = shadow_frame.GetMethod(); MethodReference method_ref = method->ToMethodReference(); SafeMap> string_init_map; SafeMap>* string_init_map_ptr; MethodRefToStringInitRegMap& method_to_string_init_map = Runtime::Current()->GetStringInitMap(); auto it = method_to_string_init_map.find(method_ref); if (it == method_to_string_init_map.end()) { string_init_map = std::move(verifier::MethodVerifier::FindStringInitMap(method)); method_to_string_init_map.Overwrite(method_ref, string_init_map); string_init_map_ptr = &string_init_map; } else { string_init_map_ptr = &it->second; } if (string_init_map_ptr->size() != 0) { uint32_t dex_pc = shadow_frame.GetDexPC(); auto map_it = string_init_map_ptr->find(dex_pc); if (map_it != string_init_map_ptr->end()) { const std::set& reg_set = map_it->second; for (auto set_it = reg_set.begin(); set_it != reg_set.end(); ++set_it) { shadow_frame.SetVRegReference(*set_it, result->GetL()); } } } } return !self->IsExceptionPending(); } template bool DoFilledNewArray(const Instruction* inst, const ShadowFrame& shadow_frame, Thread* self, JValue* result) { DCHECK(inst->Opcode() == Instruction::FILLED_NEW_ARRAY || inst->Opcode() == Instruction::FILLED_NEW_ARRAY_RANGE); const int32_t length = is_range ? inst->VRegA_3rc() : inst->VRegA_35c(); if (!is_range) { // Checks FILLED_NEW_ARRAY's length does not exceed 5 arguments. CHECK_LE(length, 5); } if (UNLIKELY(length < 0)) { ThrowNegativeArraySizeException(length); return false; } uint16_t type_idx = is_range ? inst->VRegB_3rc() : inst->VRegB_35c(); Class* array_class = ResolveVerifyAndClinit(type_idx, shadow_frame.GetMethod(), self, false, do_access_check); if (UNLIKELY(array_class == nullptr)) { DCHECK(self->IsExceptionPending()); return false; } CHECK(array_class->IsArrayClass()); Class* component_class = array_class->GetComponentType(); const bool is_primitive_int_component = component_class->IsPrimitiveInt(); if (UNLIKELY(component_class->IsPrimitive() && !is_primitive_int_component)) { if (component_class->IsPrimitiveLong() || component_class->IsPrimitiveDouble()) { ThrowRuntimeException("Bad filled array request for type %s", PrettyDescriptor(component_class).c_str()); } else { self->ThrowNewExceptionF("Ljava/lang/InternalError;", "Found type %s; filled-new-array not implemented for anything but 'int'", PrettyDescriptor(component_class).c_str()); } return false; } Object* new_array = Array::Alloc(self, array_class, length, array_class->GetComponentSizeShift(), Runtime::Current()->GetHeap()->GetCurrentAllocator()); if (UNLIKELY(new_array == nullptr)) { self->AssertPendingOOMException(); return false; } uint32_t arg[5]; // only used in filled-new-array. uint32_t vregC; // only used in filled-new-array-range. if (is_range) { vregC = inst->VRegC_3rc(); } else { inst->GetVarArgs(arg); } for (int32_t i = 0; i < length; ++i) { size_t src_reg = is_range ? vregC + i : arg[i]; if (is_primitive_int_component) { new_array->AsIntArray()->SetWithoutChecks( i, shadow_frame.GetVReg(src_reg)); } else { new_array->AsObjectArray